Metals and their ecological impact on beach sediments near the marine protected sites of Sodwana Bay and St. Lucia, South Africa
作者： E. Vetrimurugan , V.C. Shruti , M.P. Jonathan , Priyadarsi D. Roy , B.K. Rawlins
DOI: 10.1016/J.MARPOLBUL.2017.12.044
关键词: Gold mining 、 Environmental chemistry 、 Continental crust 、 Sediment 、 Placer deposit 、 Bay 、 Cadmium 、 Environmental science 、 Marine protected area 、 Pollution
摘要: A baseline study on metal concentrations in sediments was initiated from the Sodwana Bay and St. Lucia, adjacent to marine protected areas (MPAs) of South Africa. They were analysed identify acid leachable (ALM) (Fe, Mg, Mn, Cr, Cu, Mo, Ni, Co, Pb, Cd, Zn Hg) concentration pattern. Metal distribution 65 sediment samples exhibits higher abundances Cd Hg compared Upper Continental Crust. We relate enrichment these metals beach placer deposits activities related former gold mining. Geochemical indices affirmed that Cr caused contamination, posed ~90% harmful effect biological community. These sediments, however, host lower many worldwide beaches other This suggests it is largely unaffected by human activities, overabundance demands regular monitoring.
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